@article{ButtHowardRaman2022,
  author    = {Butt, Elke and Howard, Cory M. and Raman, Dayanidhi},
  title     = {LASP1 in cellular signaling and gene expression: more than just a cytoskeletal regulator},
  series = {Cells},
  volume    = {11},
  journal   = {Cells},
  number    = {23},
  issn      = {2073-4409},
  doi       = {10.3390/cells11233817},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-297447},
  year      = {2022},
  abstract  = {LIM and SH3 protein 1 was originally identified as a structural cytoskeletal protein with scaffolding function. However, recent data suggest additional roles in cell signaling and gene expression, especially in tumor cells. These novel functions are primarily regulated by the site-specific phosphorylation of LASP1. This review will focus on specific phosphorylation-dependent interaction between LASP1 and cellular proteins that orchestrate primary tumor progression and metastasis. More specifically, we will describe the role of LASP1 in chemokine receptor, and PI3K/AKT signaling. We outline the nuclear role for LASP1 in terms of epigenetics and transcriptional regulation and modulation of oncogenic mRNA translation. Finally, newly identified roles for the cytoskeletal function of LASP1 next to its known canonical F-actin binding properties are included.},
  language  = {en}
}
@article{GutknechtAraragiMerkeretal.2012,
  author    = {Gutknecht, Lise and Araragi, Naozumi and Merker, S{\"o}ren and Waider, Jonas and Sommerlandt, Frank M. J. and Mlinar, Boris and Baccini, Gilda and Mayer, Ute and Proft, Florian and Hamon, Michel and Schmitt, Angelika G. and Corradetti, Renato and Lanfumey, Laurence and Lesch, Klaus-Peter},
  title     = {Impacts of Brain Serotonin Deficiency following Tph2 Inactivation on Development and Raphe Neuron Serotonergic Specification},
  series = {PLoS One},
  volume    = {7},
  journal   = {PLoS One},
  number    = {8},
  doi       = {10.1371/journal.pone.0043157},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-133728},
  year      = {2012},
  abstract  = {Brain serotonin (5-HT) is implicated in a wide range of functions from basic physiological mechanisms to complex behaviors, including neuropsychiatric conditions, as well as in developmental processes. Increasing evidence links 5-HT signaling alterations during development to emotional dysregulation and psychopathology in adult age. To further analyze the importance of brain 5-HT in somatic and brain development and function, and more specifically differentiation and specification of the serotonergic system itself, we generated a mouse model with brain-specific 5-HT deficiency resulting from a genetically driven constitutive inactivation of neuronal tryptophan hydroxylase-2 (Tph2). Tph2 inactivation (Tph2-/-) resulted in brain 5-HT deficiency leading to growth retardation and persistent leanness, whereas a sex- and age-dependent increase in body weight was observed in Tph2+/- mice. The conserved expression pattern of the 5-HT neuron-specific markers (except Tph2 and 5-HT) demonstrates that brain 5-HT synthesis is not a prerequisite for the proliferation, differentiation and survival of raphe neurons subjected to the developmental program of serotonergic specification. Furthermore, although these neurons are unable to synthesize 5-HT from the precursor tryptophan, they still display electrophysiological properties characteristic of 5-HT neurons. Moreover, 5-HT deficiency induces an up-regulation of 5-HT\(_{1A}\) and 5-HT\(_{1B}\) receptors across brain regions as well as a reduction of norepinephrine concentrations accompanied by a reduced number of noradrenergic neurons. Together, our results characterize developmental, neurochemical, neurobiological and electrophysiological consequences of brain-specific 5-HT deficiency, reveal a dual dose-dependent role of 5-HT in body weight regulation and show that differentiation of serotonergic neuron phenotype is independent from endogenous 5-HT synthesis.},
  language  = {en}
}
@article{KohlGruendlerHuysetal.2015,
  author    = {Kohl, S. and Gruendler, T. O. J. and Huys, D. and Sildatke, E. and Dembek, T. A. and Hellmich, M. and Vorderwulbecke, M. and Timmermann, L. and Ahmari, S. E. and Klosterkoetter, J. and Jessen, F. and Sturm, V. and Visser-Vandewalle, V. and Kuhn, J.},
  title     = {Effects of deep brain stimulation on prepulse inhibition in obsessive-compulsive disorder},
  series = {Translational Psychiatry},
  volume    = {5},
  journal   = {Translational Psychiatry},
  number    = {e675},
  doi       = {10.1038/tp.2015.171},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-138300},
  year      = {2015},
  abstract  = {Owing to a high response rate, deep brain stimulation (DBS) of the ventral striatal area has been approved for treatment-refractory obsessive-compulsive disorder (tr-OCD). Many basic issues regarding DBS for tr-OCD are still not understood, in particular, the mechanisms of action and the origin of side effects. We measured prepulse inhibition (PPI) in treatment-refractory OCD patients undergoing DBS of the nucleus accumbens (NAcc) and matched controls. As PPI has been used in animal DBS studies, it is highly suitable for translational research. Eight patients receiving DBS, eight patients with pharmacological treatment and eight age-matched healthy controls participated in our study. PPI was measured twice in the DBS group: one session with the stimulator switched on and one session with the stimulator switched off. OCD patients in the pharmacologic group took part in a single session. Controls were tested twice, to ensure stability of data. Statistical analysis revealed significant differences between controls and (1) patients with pharmacological treatment and (2) OCD DBS patients when the stimulation was switched off. Switching the stimulator on led to an increase in PPI at a stimulus-onset asynchrony of 200 ms. There was no significant difference in PPI between OCD patients being stimulated and the control group. This study shows that NAcc-DBS leads to an increase in PPI in tr-OCD patients towards a level seen in healthy controls. Assuming that PPI impairments partially reflect the neurobiological substrates of OCD, our results show that DBS of the NAcc may improve sensorimotor gating via correction of dysfunctional neural substrates. Bearing in mind that PPI is based on a complex and multilayered network, our data confirm that DBS most likely takes effect via network modulation.},
  language  = {en}
}
@phdthesis{Filatova2009,
  author    = {Filatova, Alina},
  title     = {Mechanism and Control of Nuclear-Cytoplasmic Translocation of the Transporter Regulator RS1},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-38512},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2009},
  abstract  = {Das RS1 Protein (Gen RSC1A1) beteiligt sich an der Regulation des Na+-D-Glukose-kotransporters SGLT1 und einiger anderer Transporter. In subkonfluenten LLC-PK1 Zellen hemmt RS1 die Freisetzung von SGLT1 aus dem trans-Golgi-Netzwerk und die Transkription von SGLT1. W{\"a}hrend es sich in konfluenten Zellen haupts{\"a}chlich im Zytoplasma befindet, ist RS1 in subkonfluenten Zellen im Kern und im Zytoplasma lokalisiert. In der vorliegenden Arbeit wurden Mechanismus und Regulation der konfluenzabh{\"a}ngigen Kernlokalisation von RS1 untersucht. Dabel konnte gezeigt werden, dass die von Konfluenz abh{\"a}ngige Kernlokalisation von RS1 durch den Zellzyklus reguliert wird. In RS1 aus Sus scrofa (pRS1) wurde eine Sequenz identifiziert („nuclear shuttling signal", NS), die f{\"u}r die konfluenzabh{\"a}ngige Verteilung von RS1 verantwortlich ist und sowohl das Signal f{\"u}r die Kernlokalisation (NLS) als auch das Signal f{\"u}r den Export aus dem Kern (NES) beinhaltet. Die NLS und NES Signale von RS1 vermitteln die Translokation des Proteins in den Kern und aus dem Kern mit Hilfe von Importin \&\#946;1 bzw. CRM1, wobei die Verteilung von RS1 zwischen Kern und Zytoplasma durch die Aktivit{\"a}t des Exportsystems bestimmt wird. Es wurde gezeigt, dass die benachbarte Proteinkinase C (PKC) Phosphorylierungsstelle an Serin 370 von pRS1 die NS-gesteuerte Kernlokalisierung kontrolliert und f{\"u}r die vom Zellzyklus abh{\"a}ngige Kernlokalisation notwendig ist. Aufgrund der Ergebnisse der ortsgerichteten Mutagenese, PKC-Aktivierungsexperimenten und Massenspektrometrie-Analyse des Phosphorylierungsmusters von RS1 wurde ein Modell vorgeschlagen, das die Regulation der Kernlokalisation des RS1 Proteins in LLC-PK1 Zellen beschreibt. Dem Modell zufolge wird RS1 in subkonfluenten Zellen stark in den Kern bef{\"o}rdert, w{\"a}hrend der Export von RS1 aus dem Kern nicht stattfindet. Das f{\"u}hrt zur Anreicherung von RS1 im Kern. Nach Konfluenz wird Serin 370 durch PKC phosphoryliert, was die Steigerung des RS1-Exports aus dem Kern beg{\"u}nstigt und die {\"u}berwiegend zytoplasmatische Lokalisation des Proteins in konfluenten Zellen hervorruft. Die konfluenzabh{\"a}ngige Regulation der Lokalisation von RS1 kann die Expression von SGLT1 w{\"a}hrend der Regeneration von Enterozyten im D{\"u}nndarm und der Regeneration von Zellen der Nierentubuli nach hypox{\"a}mischem Stress kontrollieren. Außerdem deutet die Analyse der Genexpression in embryonalen Fibroblasten der RS-/- M{\"a}use deutet darauf hin, dass die transkriptionale Regulation durch RS1 im Zellzyklus und bei der Zellteilung eine wichtige Rolle spielen kann. Da die Lokalisation von RS1 zellzyklusabh{\"a}ngig ist, kann RS1 f{\"u}r die Regulation der Transporter in spezifischen Phasen des Zellzyklus wichtig sein.},
  subject      = {RS1},
  language  = {en}
}